A simplified ultrasound-based scoring system for predicting placenta accreta spectrum disorders in Korean women: a prospective study. - Um, Gi Soo; Kang, Byung Soo; Kim, Oyoung; Lee, Seon Ui; Park, In Yang; Hong, Subeen; Ko, Hyun Sun (Journal of Maternal-Fetal & Neonatal Medicine, 2025)